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Actor and comedian David Walliams has previously quipped about the judge: "His face has always changed. Something has happened. You think: 'What has gone on? What exactly? Did you have a terrible accident or something?' Yeah, he always looks a bit different."

But Simon's face isn't the only thing different on this year's X-Factor - as the judging panel no longer includes Louis Walsh and Nicole Scherzinger.

The new-look line up for 2018 features Robbie Williams, Ayda Field, Louis Tomlinson and - of course - Simon.